Stamping-press



(No Model.) 2 SheetS She e'b 1.

W. D. CHAPMAN.

STAMPING PRESS.

No. 305,290. Patented Sept. 16, 1884.

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M TORNEYS.

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(No Model.) 2 Sheets-Sheet 2.

W. D. CHAPMAN.

I STAMPING PRESS. No. 305,290. I Patented Sept. 16, 1884.

ATTORNEYS.

PATENT. OFFICE.

WILLIAM D. CHAPMAN, OF THERESA, NEWV YORK.

STAMPING-PRESS.

SPECIFICATION forming part of Letters Patent No. 305,290, datedSeptember 16, 1884.

Application filed February 23, 1884. (N0 model.)

To all whom it may concern:

Be it known that I,W1LLIAM D. CHAPMAN, of Theresa, in the county ofJefferson and State of New York, have invented certain new and usefulImprovements in Stamping -Presscs; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,which'form a part of this specification, and in which 7 Figure l is aperspective view of my improved stamping-press. Fig. 2 is a side view ofthe same, and Figs. 3' and 4 are front views showing the plunger and itsclamp in two different positions.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention has relation to presses for stamping ornaments or lettersin metallic articles and it consists in the improved construction andcombination of parts of the same, as hereinafter more fully describedand claimed.

In the accompanying drawings, the letter A indicates an upright having arearwardlyextending bracket, B, at its upper end, upon the end of whichis pivoted a horizontal double lever, O, and having a forwardlyextendingbracket, D, at its upper end, the outer end of which forms a verticalbearing, E, provided with a set-screw, F. Another forwardly-proj eetingbracket, G, forming a vertical bearing, H, at its outer end, providedwith a set-screw, I, and forming a bearing,J, at its inner end, providedwith a set-screw, K, slides with the said bearing upon the upright,being capable of adjustment by the set-screw. A block, L, having aset-screw, M, slides upon the lower end of the upright, where it may beadjusted by the set-screw, and is provided with a forwardly-proj ectingfiat spring-arm, N, the outer end of which forms aslightlydownwardlytapering sleeve or socket, 0, into which the die P,the lower end of which is provided with the desired letters orornamentation, is inserted, and in which the die may be secured by meansof soft solder poured in between the sides of the die and the sleeve, orby any other desirable means. The upright is secured at which forms ananvil, upon which the article to be stamped may be placed.

R is the plunger, consisting of a bar sliding in the vertical bearingsin the outer ends of the brackets, in which bearings the plunger may besecuredand held firmly suspended over the arivihwhile the work is beingadjusted or while not in use, by means of the setscrews in the bearings.

A clamp, S, consisting of two forwardlyprojecting arms or jaws, slideswith its inner end, which forms a bearing, T, upon an upright rod, U,projecting from the inner end of the lower sliding bracket, and isforced downward by a spring, V, secured to the upper end of its bearingand to the inner end of the upper bracket, sliding upon the upper end ofthe upright rod, while a rod, W, is secured to the clamp near its outerend, andis secured at its upper end to the forward endof the doublelever at the top of the upright, to the other end of which is secured acord or rod, X, passing downward to a treadle or other means for drawingit down. A doubled rod, Z, forming a rhombic or lozenge-shapedenlargement, A, at its lower doubled end, slides with its upper endsbetween the bearing of the upper bracket and the set'screw upon thesame, by which it may be clamped and held adjusted at any desiredheight. The outer ends of the clamp project far enough beyond the pointat which they clamp the plunger to bear upon the inclined sides of theenlargement of the doubled rod; and it will be seen that when theforward end of the lever is tilted upward the clamp will raise theplunger until the outer ends of the clamp strike the inclined sides ofthe enlargement upon the end of the doubled bar, which will force thejaws apart, allowing the plunger todrop, striking the die, whereupon thespring bearing against the clamp will force the same down, allowing itto clamp it again for another stroke. It will also be seen that, the diebeing fastened in the end of a spring, the die will be forced down uponthe work when struck, whereupon the spring will again raise it free ofthe work, allowing the work to be removed or its position changed. Itwill also be seen that by moving the lower bracket up .or down, thestroke of the plunger may be regulated and adjusted to any length, andconsequently to any strength desired.

By the foregoing description, taken in connection with the accompanyingdrawings, the operation of my press will be readily understood withoutfurther explanation.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- 1. The combination, in a press forstamping metallic articles,of an upright having brackets formingvertical bearings, a die-holdin g springarm sliding adjustably upon theupright, a plunger sliding in the vertical bearings, a clamp adapted tograsp the plunger, and means for raising the clamp and for separatingits ends at the end of its upstroke, as and for the purpose shown andset forth.

2. In a stampingpress, the combination of a vertically-sliding plunger,a clamp adapted to grasp the plunger and having means for being raisedand forced down, and a bar formed with an enlargement at its lower endadapted to separate the ends of the clamp at the end of its upstroke, asand for the purpose shown and set forth.

3. The combination, in a staln nngpress, of a base forming an anvil, anupright having a forwardly and rearwardly projecting bracket, theforwardly projecting bracket forming a vertical bearing at its outer endprovided with ing a vertical bearing at its outer forward end providedwith a set-screw, a plunger sliding in the bearings of the brackets, avertical rod projecting upward from the inner end of the slidingbracket, a clamp sliding with its inner end upon the upright rod andadapted to clamp the plunger with its outer ends, a springsecured to theinner end of the upper bracket and bearing against the inner end of theclamp, a doubled rod sliding adjustably upon the upper vertical bearingand forming a rhombic enlargement at its lower doubled end, a leverpivoted upon the end of the rearwardly projecting bracket, and havingmeans for tilting its rear end downward, and a rod hinged at its upperend to the forward end of the lever and secured at its lower end to theclamp, all constructed to operate as and for the purpose shown and setforth.

In testimony that I claim the foregoing as my own I have hereuntoaffixed my signature in presence of two witnesses.

WILLIAM D. CHAPMAN.

Witnesses:

DORMAN WALRADT, HENRY D. SCHERMERHORN.

